Made type optional

action.yml

@@ -1,5 +1,5 @@
 name: "sast-scan"
-description: "This action wraps the [oss sast](https://github.com/AppThreat/sast-scan/) scanning tool called `sast-scan`."
+description: "sast-scan is a free and open-source Static Analysis Security Testing (SAST) tool for a range of languages."
 inputs:
   src:
     description: "Source directory to scan. Defaults to workspace"
@@ -10,8 +10,8 @@ inputs:
     required: false
     default: "/github/workspace/reports"
   type:
-    description: "Project type. Eg: java, python, nodejs"
-    required: true
+    description: "Project type. Eg: java, python, nodejs. Comma separated values allowed."
+    required: false
 runs:
   using: "docker"
   image: "docker://quay.io/appthreat/sast-scan:latest"